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nano question. How do you know when to refill

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Old Feb 20, 2008 | 12:32 PM
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Default nano question. How do you know when to refill

I know you have to refill the nano bottle when you refil the nitrous bottle, but how do you know when to refill the N20 bottle. Seems like the N2O guage will stay at a constitent pressure so there won't be a low psi reading when you are out of N2O like normal.
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Old Feb 20, 2008 | 12:42 PM
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you could use a digital bottle content indicator like this one

http://www.harrisspeedworks.com/shop...cat=339&page=1

it uses a mathematical formula which you enter all the information into and then it calculates bottle weight on certain parameters
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Old Feb 20, 2008 | 12:48 PM
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Thanks Mike. How about if you don't want to spend $240?
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Old Feb 20, 2008 | 12:54 PM
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There are other guages out there that perform the same task, i was just using ours as an example. I dont know any prices though.

I believe someone on here, maybe it was robert, has a calculation table to figure out roughly how much nitrous you will use based on size shot, psi and amount of time. Only other thing you would have to factor in is purge.
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Old Feb 20, 2008 | 03:23 PM
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take the bottle out and weigh it.
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Old Feb 20, 2008 | 03:28 PM
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Originally Posted by Oso SS
take the bottle out and weigh it.
not always an option if your at the track. But i do agree you should weigh it on a scale everytime you get home. it will help in determining how much you use per trip to the track and how many passes you got from it.
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Old Feb 20, 2008 | 03:34 PM
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So what does the average emtpy bottle weigh???
well I guess I can weigh mine when it gets empty.
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Old Feb 20, 2008 | 03:42 PM
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i think it says right on the bottle, how much it weighs empty
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Old Feb 20, 2008 | 03:44 PM
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Originally Posted by quickblade
So what does the average emtpy bottle weigh???
well I guess I can weigh mine when it gets empty.
Except that it will be full of nitrogen. So the real question is what does the average bottle filled with nitrogen weight? Even then, you have to take the bottle out of the car. Would be nice if there was a cheap guage that keeps track of the amount of nitrous that has gone through the valve.
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Old Oct 9, 2008 | 04:06 PM
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When you hook a full NANO bottle to a full nitrous bottle the NANO pressure will go down to 4000-4200psi. When the nitrous bottle is empty the NANO bottle will read 1000psi. So for instance if your NANO bottle read 1400psi then you know you have one 1/4mile run left.
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Old Oct 9, 2008 | 06:55 PM
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Originally Posted by blwnstang02
When you hook a full NANO bottle to a full nitrous bottle the NANO pressure will go down to 4000-4200psi. When the nitrous bottle is empty the NANO bottle will read 1000psi. So for instance if your NANO bottle read 1400psi then you know you have one 1/4mile run left.
it really is like having a nitrous level gauge on the nano bottle.
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